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Journal articles on the topic 'Groundwater'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

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1

Zhang, Shuang, and Noah J. Planavsky. "Revisiting groundwater carbon fluxes to the ocean with implications for the carbon cycle." Geology 48, no. 1 (2019): 67–71. http://dx.doi.org/10.1130/g46408.1.

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Abstract Compared with riverine systems, the influence of groundwater on the global carbon cycle has remained underexplored. Here, we provide a new estimate of the bicarbonate fluxes from fresh groundwater to the ocean by coupling a statistical and hydrological analysis of groundwater and river samples across the contiguous United States with a study of global groundwater characteristics. We find that the mean concentration ([]) in groundwaters exceeds that in surface rivers by a factor of 2–3 throughout the contiguous United States. Based on estimates of fresh groundwater discharge to the oce

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2

Kitessa, Wagari Mosisa, Adisu Befekadu Kebede, Fayera Gudu Tufa, et al. "Hydrogeochemical Characterization and Processes Controlling Groundwater Chemistry of Complex Volcanic Rock of Jimma Area, Ethiopia." Water 16, no. 23 (2024): 3470. https://doi.org/10.3390/w16233470.

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The sustainable management of groundwater in the Jimma area is complicated by a lack of comprehensive studies on its chemical makeup and the geochemical processes influencing its hydrochemistry. This research aims to fill that gap by examining 51 groundwater samples from various sources, including deep groundwaters, shallow groundwaters, hand-dug well groundwaters, surface waters, and springs within the area primarily consisting of complex volcanic rocks. The goal is to describe the hydrogeochemical characteristics and determine the key processes affecting groundwater composition in this volca

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Bai, Zhanxue, Xinwei Hou, Xiangquan Li, et al. "Hydrogeochemical Characteristics and Sulfate Source of Groundwater in Sangu Spring Basin, China." Water 16, no. 20 (2024): 2884. http://dx.doi.org/10.3390/w16202884.

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The Sangu Spring Basin is located in an important economic area, and groundwater is the main source of water for local life and industry. Understanding the sources of chemical components in groundwater is important for the development and utilization of groundwater. In this paper, we analyzed the origin of the chemical components of groundwater and their evolution in the Sangu Spring Basin using statistical analysis, Piper diagrams, Gibbs diagrams, ion ratios, and combined hydrochemistry–isotope analyses. The results show that the groundwater in the Sangu Spring Basin is mainly derived from at

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Dong, Yihui, Jiale Li, Zhanxue Sun, Evgeniya Soldatova, and Jinjing Zan. "Bacterial diversity and community structure in nitrate-contaminated shallow groundwater in the Poyang Lake basin, China." E3S Web of Conferences 98 (2019): 01012. http://dx.doi.org/10.1051/e3sconf/20199801012.

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The Poyang Lake basin in the Jiangxi province of China has been exposed to nitrate pollution caused by irrigation practices, leading to high groundwater nitrate concentration. Eight groundwater samples were collected from shallow wells for hydrochemical, bacterial diversity, and community structure analysis in November 2017. Shallow groundwaters of the basin are weakly acid and in an oxidizing state, with EC ranging from 87.6 to 279.5 µS/cm and TDS varying between 53 to 344 mg/L and averaging of 164 mg/L. The NO3-N form is the dominant nitrogen species in groundwater, with сoncentrations of NO

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Kasem, Alaa M., Zhifang Xu, Hao Jiang, Wenjing Liu, Jiangyi Zhang, and Ahmed M. Nosair. "Nitrate Source and Transformation in Groundwater under Urban and Agricultural Arid Environment in the Southeastern Nile Delta, Egypt." Water 16, no. 1 (2023): 22. http://dx.doi.org/10.3390/w16010022.

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With the intensification of human activities, nitrate pollutants in groundwater are receiving increasing attention worldwide. Especially in the arid Nile Delta of Egypt, groundwater is one of the most valuable water resources in the region. Identifying the source of nitrate in groundwater with strong human disturbances is important to effective water resource management. This paper examined the stable isotopes (δ15N/δ18O-NO3 and δ2H/δ18O-H2O) and the hydrogeochemical parameters of the shallow groundwaters in the arid southeast of the Nile Delta to assess the potential sources and transformatio

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Taşan, Mehmet, Yusuf Demir, and Sevda Taşan. "Groundwater quality assessment using principal component analysis and hierarchical cluster analysis in Alaçam, Turkey." Water Supply 22, no. 3 (2021): 3431–47. http://dx.doi.org/10.2166/ws.2021.390.

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Abstract This study assessed groundwater quality in Alaçam, where irrigations are performed solely with groundwaters and samples were taken from 35 groundwater wells at pre and post irrigation seasons in 2014. Samples were analyzed for 18 water quality parameters. SAR, RSC and %Na values were calculated to examine the suitability of groundwater for irrigation. Hierarchical cluster analysis and principal component analysis were used to assess the groundwater quality parameters. The average EC value of groundwater in the pre-irrigation period was 1.21 dS/m and 1.30 dS/m after irrigation in the s

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7

Craig, D., and L. M. Johnston. "Acid Precipitation and Groundwater Chemistry at the Turkey Lakes Watershed." Canadian Journal of Fisheries and Aquatic Sciences 45, S1 (1988): s59—s65. http://dx.doi.org/10.1139/f88-267.

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To determine correctly the response of a basin to various acid loading events, the groundwater hydrology must be considered as a function of the basin stratigraphy and mineralogy. Groundwaters in the Turkey Lakes Watershed are well buffered and in general provide a reservoir of alkalinity for surface waters in the basin. The groundwater chemistry is dominated by the weathering of carbonates present in the tills. Groundwater can follow a variety of pathways through the subsurface. These pathways can have very different flow rates and groundwater chemistry. As a result of this the influence of g

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8

Yang, Shaokang, Zhen Zhao, Shengbin Wang, et al. "Hydrogeochemical Insights into the Sustainable Prospects of Groundwater Resources in an Alpine Irrigation Area on Tibetan Plateau." Sustainability 16, no. 21 (2024): 9229. http://dx.doi.org/10.3390/su16219229.

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The Tibetan Plateau is the “Asia Water Tower” and is pivotal for Asia and the whole world. Groundwater is essential for sustainable development in its alpine regions, yet its chemical quality increasingly limits its usability. The present research examines the hydrochemical characteristics and origins of phreatic groundwater in alpine irrigation areas. The study probes the chemical signatures, quality, and regulatory mechanisms of phreatic groundwater in a representative alpine irrigation area of the Tibetan Plateau. The findings indicate that the phreatic groundwater maintains a slightly alka

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9

Qian, Yong, Shijun Zhen, Chen Yue, and Xiangxiang Cui. "Distribution and Origins of Hardness in Shallow and Deep Groundwaters of the Hebei Plain, China." Water 16, no. 2 (2024): 310. http://dx.doi.org/10.3390/w16020310.

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Elevated hardness concentrations in groundwater have become a noteworthy concern in recent decades because long-term drinking of groundwater with high levels of hardness is an important factor resulting in chronic kidney diseases. In this study, the distribution and origins of groundwater total hardness (TH) in various sub-plains and different land-use areas of the Hebei Plain (HBP) were investigated. A total of 445 groundwater samples in the HBP were collected once in 2021, and twelve chemical parameters, including TH in groundwater, were analyzed. Results showed that TH-rich (>450 mg/L) s

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Mamand, Bruska, and Dana Mawlood. "Using Tritium Isotope in Groundwater to Estimate the Reservoir Capacity at Erbil, Northern Iraq." Iraqi Geological Journal 56, no. 2D (2023): 245–57. http://dx.doi.org/10.46717/igj.56.2d.19ms-2023-10-25.

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Tritium is a radioactive isotope of hydrogen in water molecule can be applied in tracer studies to estimate water residence time. The tritium values of the groundwater in Erbil and the reservoir's capacity were the main subjects of this investigation. Three sub-basins, including, Kapran (720 km2), Central (1315 km2), and Bashtapa (625 km2) constructs Erbil City's groundwater basin. 27 groundwater samples from three sub-basins were taken for oxygen-18, tritium analysis and measurement of electrical conductivity. Tritium values divided the groundwater reservoirs into three possible groups: pre-b

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11

Zhao, Zhen, Gongxi Liu, Guangxiong Qin, et al. "Exploring the Hydrochemical Characteristics and Controlling Processes of Groundwater in Agricultural Lower Reaches of a Typical Arid Watershed on Tibetan Plateau." Sustainability 17, no. 5 (2025): 2117. https://doi.org/10.3390/su17052117.

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Groundwater is crucial for domestic, agricultural, and ecological uses, particularly in the lower reaches of arid basins, where its quality often limits availability. A total of 26 phreatic groundwater samples were collected from a typical endorheic watershed on the Tibetan Plateau to assess the hydrochemical characteristics of phreatic groundwater in the lower reaches of arid inland watersheds. The hydrochemical characteristics, quality, and formation mechanisms of groundwater were analyzed using the Entropy-Weight Water Quality Index (EWQI), irrigation water quality indexes (such as sodium a

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12

Liu, Chunyan, Qinxuan Hou, Yetao Chen, and Guanxing Huang. "Hydrogeochemical Characteristics and Groundwater Quality in a Coastal Urbanized Area, South China: Impact of Land Use." Water 14, no. 24 (2022): 4131. http://dx.doi.org/10.3390/w14244131.

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Land use transformation accompanied with various human activities affects groundwater chemistry and quality globally, especially in coastal urbanized areas because of complex human activities. This study investigated the impact of land use on groundwater chemistry and quality in a coastal alluvial aquifer (CAA) of the Pearl River Delta where urbanization continues. A fuzzy synthetic evaluation method was used to evaluate the groundwater quality. Besides, factors controlling groundwater chemistry and quality in the CAA were discussed by using a principal components analysis (PCA). Nearly 150 gr

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13

Datta, P. S., S. K. Bhattacharya, P. Mookerjee, and S. K. Tyagi. "Study of Groundwater Occurrence and Mixing in Pushkar (Ajmer) Valley, Rajasthan with d18O and Hydrochemical Data." Journal Geological Society of India 43, no. 4 (1994): 449–56. http://dx.doi.org/10.17491/jgsi/1994/430413.

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Abstract Stable isotopic composition of groundwaters and their hydrochemistry have been used for investigating possible existence of both palaeo-water and replenishable groundwater in Pushkar (Ajmer) Valley, Rajasthan. Causes of salinity increase in some of the groundwaters and intermixing of saline and fresh groundwaters have also been studied. The d18O values of water samples show a wide range varying from -6.3‰ to +4.0‰, indicating different sources of origin of these waters. There is a depletion of d18O with increasing depth of water table which may be due to stratification in groundwater

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14

Sovann, C., and D. A. Polya. "Improved groundwater geogenic arsenic hazard map for Cambodia." Environmental Chemistry 11, no. 5 (2014): 595. http://dx.doi.org/10.1071/en14006.

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Environmental context Groundwater arsenic is a major environmental risk to human health in many regions of the world, including Cambodia where groundwater is often used for drinking water. We present data for hitherto poorly sampled regions in Cambodia, notably around Tonle Sap and in the coastal provinces, and provide a geo-statistical model of arsenic in shallow groundwater for the whole country. Abstract Arsenic is a known environmental chemical hazard in shallow groundwaters of Cambodia and is increasingly recognised as a major problem for public health. Notwithstanding this, accurate arse

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15

Rusiñol, Marta. "Waterborne viruses in urban groundwater environments." PLOS Water 2, no. 8 (2023): e0000168. http://dx.doi.org/10.1371/journal.pwat.0000168.

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The proportion of global population using urban aquifers as drinking water sources increases every year and indeed the groundwater quality is not monitored adequately. Although norovirus has been identified as the first cause of groundwater-related outbreaks, the surveillance of waterborne viruses has been rather neglected. From ageing or disrupted sewer systems, occasional sewer discharges (e.g. combined sewer overflows, storm runoff), to poorly managed reclaimed water infiltration practices, multiple are the pathways that cause groundwater quality deterioration. This study revises the main v

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16

Lam, A., D. Karssenberg, B. J. J. M. van den Hurk, and M. F. P. Bierkens. "Spatial and temporal connections in groundwater contribution to evaporation." Hydrology and Earth System Sciences Discussions 8, no. 1 (2011): 1541–68. http://dx.doi.org/10.5194/hessd-8-1541-2011.

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Abstract. In climate models, lateral terrestrial water fluxes are usually neglected. We estimated the contribution of vertical and lateral groundwater fluxes to the land surface water budget at a subcontinental scale, by modelling convergence of groundwater and surfacewater fluxes. We present a hydrological model of the entire Danube Basin at 5 km resolution, and use it to show the importance of groundwater for the surface climate. The contribution of groundwater to evaporation is significant, and can be upwards of 30% in summer. We show that this contribution is local by presenting the ground

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17

Liu, Ji Lai, Tian Ming Huang, and Jie Li. "Groundwater Recharge Environments and Hydrogeochemical Evolution in Beijing, China: Multi-Tracer Approach." Advanced Materials Research 518-523 (May 2012): 3647–51. http://dx.doi.org/10.4028/www.scientific.net/amr.518-523.3647.

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The groundwater recharge environments and hydrogeochemical characteristics in Beijing were investigated using a combination of chemical indicators, stable isotopes, and radiocarbon dating. There are two distinct zones for those groundwaters: modern water (1000 a) are depleted, which implies that the palaeowaters were recharged in relatively cold climate. The TDS for all groundwater samples range from 312 to 914 mg/L. Groundwaters are supersaturated with respect to calcite and the δ13C value is stable (around -13‰), which suggests dissolution of calcite is limited. Dissolution of halite, sulfat

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18

Haria, A. H., and P. Shand. "Evidence for deep sub-surface flow routing in forested upland Wales: implications for contaminant transport and stream flow generation." Hydrology and Earth System Sciences 8, no. 3 (2004): 334–44. http://dx.doi.org/10.5194/hess-8-334-2004.

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Abstract. Upland streamflow generation has traditionally been modelled as a simple rainfall-runoff mechanism. However, recent hydrochemical studies conducted in upland Wales have highlighted the potentially important role of bedrock groundwater in streamflow generation processes. To investigate these processes, a detailed and novel field study was established in the riparian zone and lower hillslopes of the Hafren catchment at Plynlimon, mid-Wales. Results from this study showed groundwater near the river behaving in a complex and most likely confined manner within depth-specific horizons. Rap

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19

Guggenmos, M. R., B. M. Jackson, and C. J. Daughney. "Investigation of groundwater-surface water interaction using hydrochemical sampling with high temporal resolution, Mangatarere catchment, New Zealand." Hydrology and Earth System Sciences Discussions 8, no. 6 (2011): 10225–73. http://dx.doi.org/10.5194/hessd-8-10225-2011.

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Abstract. The interaction between groundwater and surface water is dynamic and is known to show considerable spatial and temporal variability. Generally hydrological studies that investigate this interaction are conducted at weekly to yearly timescales and inadvertently lose information contained at the neglected shorter timescales. This paper utilises high resolution physical and chemical measurements to investigate the groundwater and surface water interactions of the small temperate Mangatarere Stream in New Zealand. Continuous electrical conductivity, water temperature and stage measuremen

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20

Guggenmos, M. R., C. J. Daughney, B. M. Jackson, and U. Morgenstern. "Regional-scale identification of groundwater-surface water interaction using hydrochemistry and multivariate statistical methods, Wairarapa Valley, New Zealand." Hydrology and Earth System Sciences 15, no. 11 (2011): 3383–98. http://dx.doi.org/10.5194/hess-15-3383-2011.

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Abstract. Identifying areas of interaction between groundwater and surface water is crucial for effective environmental management, because this interaction is known to influence water quantity and quality. This paper applies hydrochemistry and multivariate statistics to identify locations and mechanisms of groundwater-surface water interaction in the pastorally dominated Wairarapa Valley, New Zealand. Hierarchical Cluster Analysis (HCA) and Principal Components Analysis (PCA) were conducted using site-specific median values of Ca, Mg, Na, K, HCO3, Cl, SO4 and electrical conductivity from 22 s

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Guggenmos, M. R., C. J. Daughney, B. M. Jackson, and U. Morgenstern. "Regional-scale identification of groundwater-surface water interaction using hydrochemistry and multivariate statistical methods, Wairarapa Valley, New Zealand." Hydrology and Earth System Sciences Discussions 8, no. 4 (2011): 6443–87. http://dx.doi.org/10.5194/hessd-8-6443-2011.

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Abstract. Identifying areas of interaction between groundwater and surface water is crucial for effective environmental management, because this interaction is known to influence water quantity and quality. This paper applies hydrochemistry and multivariate statistics to identify locations and mechanisms of groundwater-surface water interaction in the pastorally dominated Wairarapa Valley, New Zealand. Hierarchical Cluster Analysis (HCA) and Principal Components Analysis (PCA) were conducted using site-specific median values of Ca, Mg, Na, K, HCO3, Cl, SO4 and electrical conductivity from 22 s

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Listiyani R.A., T. "HYDROCHEMISTRY OF GROUNDWATER IN GEYER, GROBOGAN PROVINCE, CENTRAL JAVA." KURVATEK 1, no. 2 (2017): 13–19. http://dx.doi.org/10.33579/krvtk.v1i2.230.

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The demand of clean water as well as good quality of drinking water in research area puss the author for knowing about groundwater quality in research area. The aim of the research is to understand the hydrochemistry of groundwater in study area, includinghydrochemical processes and the influence of minerals or rocks to groundwater quality. The methods in the research are groundwater and rocks sampling, petrography and also groundwater’s chemical analysis.Result of this study shows that groundwater quality in Geyer area is influenced by minerals and rocks in that place with dissolution and ion

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Nanni, Arthur, Ari Roisenberg, Jandyra M. G. Fachel, Gilberto Mesquita, and Cristiano Danieli. "Fluoride characterization by principal component analysis in the hydrochemical facies of Serra Geral Aquifer System in Southern Brazil." Anais da Academia Brasileira de Ciências 80, no. 4 (2008): 693–701. http://dx.doi.org/10.1590/s0001-37652008000400010.

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Principal component analysis is applied to 309 groundwater chemical data information from wells in the Serra Geral Aquifer System. Correlations among seven hydrochemical parameters are statistically examined. A four-component model is suggested and explains 81% of total variance. Component 1 represents calcium-magnesium bicarbonated groundwaters with long time of residence. Component 2 represents sulfated and chlorinated calcium and sodium groundwaters; Component 3 represents sodium bicarbonated groundwaters; and Component 4 is characterized by sodium sulfated with high fluoride facies. The co

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Shevchenko, O., and V. Dolin. "GROUNDWATER SELF-CLEARING FROM 90SR WITHIN BACKGROUND AREA AND OWING TO ARTIFICIAL CONTAMINATION." Visnyk of Taras Shevchenko National University of Kyiv. Geology, no. 3 (82) (2018): 100–106. http://dx.doi.org/10.17721/1728-2713.82.13.

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The main idea of the presented results is the determination of spatial-temporal regularities of 90Sr content in groundwaters within Chornobyl Exclusion Zone. Utilization of formal kinetic regularities (of I order for irreversible process) for monitoring data analyses has been substantiated. Rate constants of groundwater self-clearing from 90Sr in dependence of type of contamination are calculated by iteration method. Graphic interpretation of data has been realized using package for analysis of Microsoft Excel and Statistica software. Self-clearing of groundwaters is carried out owing to three

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R.A, T. Listayni, and Ign Adi Prabowo. "Recharge Zone of Shallow Groundwater at Southeastern Part of Kulon Progo District Area based on Groundwater Facies." International Journal of Economic and Environmental Geology 13, no. 4 (2023): 10–15. https://doi.org/10.46660/ijeeg.vol13.iss4.2022.754.

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The Galur and Lendah areas are in the southeastern part of Kulon Progo Regency, Yogyakarta, Indonesia.This area has become a developing area because of the new airport in this district. Along with its development, the needfor groundwater in this area is increasing, so groundwater research is also increasingly needed. A study on groundwateris required to support the development of this region. This time, a groundwater study was conducted to determine thepotential for the recharge-discharge zone, also groundwater flow patterns based on the chemical facies of thegroundwater. The hydrogeological s

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Zhu, Bing-Qi, Xiao-Zong Ren, and Patrick Rioual. "Is the Groundwater in the Hunshandake Desert (Northern China) of Fossil or Meteoric Water Origin? Isotopic and Hydrogeochemical Evidence." Water 10, no. 11 (2018): 1515. http://dx.doi.org/10.3390/w10111515.

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To gain an insight into the origin of groundwater in the Hunshandake Desert (HSDK), stable and radioactive isotopes and the major ion hydrochemistry of groundwater, as well as other natural waters, were investigated in this desert. The results showed that the groundwaters in the HSDK are freshwater (total dissolved solid (TDS) < 700 mg/L) and are depleted in δ2H and δ18O when compared with the modern precipitation. The major water types are the Ca–HCO3 and Ca/Mg–SO4 waters. No Cl-type and Na-type waters occurred in the study area. The ionic and depleted stable isotopic signals in groundwate

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Utomo, H., and H. Siswoyo. "Determination of groundwater conservation zones study by considering groundwater recharge changes." IOP Conference Series: Earth and Environmental Science 1311, no. 1 (2024): 012053. http://dx.doi.org/10.1088/1755-1315/1311/1/012053.

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Abstract This paper aims to find a new groundwater conservation zone concept in Indonesia by improving groundwater zoning by considering groundwater recharge changes. The previous zoning criteria only used groundwater level decrease and selected groundwater quality parameters. The ideas of this new concept are related to actual conditions, in terms of groundwater recharge changes due to global climate changes that control the precipitation frequency and in terms of land use changes that control groundwater recharge quantity. The changes are dynamically altered due to anthropogenic interactions

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Bi, Pan, Lixin Pei, Guanxing Huang, Dongya Han, and Jiangmin Song. "Identification of Groundwater Contamination in a Rapidly Urbanized Area on a Regional Scale: A New Approach of Multi-Hydrochemical Evidences." International Journal of Environmental Research and Public Health 18, no. 22 (2021): 12143. http://dx.doi.org/10.3390/ijerph182212143.

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Efficient identification of groundwater contamination is a major issue in the context of groundwater use and protection. This study used a new approach of multi-hydrochemical indicators, including the Cl-Br mass ratio, the hydrochemical facies, and the concentrations of nitrate, phosphate, organic contaminants, and Pb in groundwater to identify groundwater contamination in the Pearl River Delta (PRD) where there is large scale urbanization. In addition, the main factors resulting in groundwater contamination in the PRD were also discussed by using socioeconomic data and principal component ana

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Kang, Mary, Debra Perrone, Ziming Wang, Scott Jasechko, and Melissa M. Rohde. "Base of fresh water, groundwater salinity, and well distribution across California." Proceedings of the National Academy of Sciences 117, no. 51 (2020): 32302–7. http://dx.doi.org/10.1073/pnas.2015784117.

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The depth at which groundwaters transition from fresh to more saline—the “base of fresh water”—is frequently used to determine the stringency and types of measures put in place to manage groundwater and protect it from contamination. Therefore, it is important to understand salinity distributions and compare defined bases of fresh water with salinity distributions and groundwater well depths. Here we analyze two distinct datasets: 1) a large set of total dissolved solids concentration (TDS) measurements (n= 216,754) and 2) groundwater well locations and depths (n= 399,454) across California. W

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Rissmann, C. W. F., M. I. Leybourne, C. Benn, J. A. Kidder, and L. K. Pearson. "Comparison of groundwater composition from the Monturaqui and Punta Negra Basins, northern Chile: implications for porphyry copper exploration." Geochemistry: Exploration, Environment, Analysis 22, no. 2 (2022): geochem2021–056. http://dx.doi.org/10.1144/geochem2021-056.

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Groundwaters recovered from the Salar de Punta Negra and Monturaqui basins in the Atacama Desert of northern Chile exhibit distinctly different isotopic, major, trace, and porphyry copper elemental compositions related to contrasting morphostructural, geochemical, and hydrodynamic settings. Comparison of these distinct groundwater signatures with groundwaters from known porphyry copper deposits (Salar de Hamburgo and Spence Deposit), can be used to determine if either basin might be prospective for porphyry copper mineralization. Groundwaters within the Punta Negra Basin exhibit geochemical ch

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Huerta, Pedro, Pedro Carrasco-García, Ildefonso Armenteros, Clemente Recio, Javier Carrasco-García, and Esther Rodríguez-Jiménez. "TDEM Soundings as a Tool to Determine Seasonal Variations of Groundwater Salinity (Villafáfila Lakes, Spain)." Water 14, no. 15 (2022): 2402. http://dx.doi.org/10.3390/w14152402.

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Interaction between groundwaters with different salinities and lakes show seasonal variations driven by changes in precipitation and evapotranspiration. In the vicinity of Villafáfila lakes, local fresh and brackish regional groundwaters feeds the lakes, forming a brine in the lake sediments aquitard. Two TDEM surveys (summer 2019 and winter 2020) were carried out. Five TDEM soundings were acquired at the same location for each survey, forming a profile from the hills to the lake-shore. Simultaneously to the TDEM surveys, electric conductivity of lake water and groundwater was measured. The re

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Chen, Song, and Herong Gui. "The age, distribution, and geochemical characteristics of groundwater in the Ordovician limestone aquifer in the Huaibei coalfield, China." Water Practice and Technology 12, no. 2 (2017): 354–62. http://dx.doi.org/10.2166/wpt.2017.042.

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In this study, we collected 22 groundwater samples and supporting measurements from different coal-mining districts in the Huaibei coalfield to examine the age, hydro-chemical characteristics, and evolution of groundwater in the Ordovician limestone aquifer (OA). We determined the groundwater concentrations of major ions, stable isotopes (hydrogen and oxygen) and a radio isotope (14C). All the samples were alkaline in nature, and had pH values between 7.10 and 10.80. The total dissolved solids (TDS) contents varied from 119 to 2,443 mg/l. The concentrations of δD and δ18O in groundwater varied

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Chen, Song, and Herong Gui. "Calculating groundwater mixing ratios in multi-aquifers based on statistical methods: a case study." Water Practice and Technology 16, no. 2 (2021): 621–32. http://dx.doi.org/10.2166/wpt.2021.027.

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Abstract Samples of river water and groundwater from Quaternary (QA), sandstone (SA), Taiyuan formation (TA), and Ordovician limestone (OA) aquifers in the Suxian coal-mining district, Anhui Province, China were collected. Their physicochemical properties, and major ion and isotopic compositions were determined. The samples were alkaline, with pH values exceeding 8, and the total dissolved solids concentrations depended on the water source. The δD and δ18O contents were highest in the river water samples and lowest in the SA groundwater. The isotopic characteristics of the QA and OA groundwate

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Setyaningsih, D. L., K. D. Setyawan, D. P. E. Putra, and Salahuddin. "Hydrogeological Conceptual Model in the Middle of Randublatung Groundwater Basin." IOP Conference Series: Earth and Environmental Science 926, no. 1 (2021): 012078. http://dx.doi.org/10.1088/1755-1315/926/1/012078.

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Abstract Randublatung groundwater basin is one of the groundwaters basins with massive utilization of groundwater pumping. However, the knowledge of the comprehensive hydrogeological system in this groundwater basin is limited, so this research aims to determine a comprehensive hydrogeological conceptual model of the Randublatung groundwater basin. The methodology was conducted by collecting secondary and primary data of deep and shallow wells to evaluate boundaries of pattern and direction of groundwater flow and develop the aquifer system’s geometry. The result shows that the groundwater flo

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Polya, D. A., A. G. Gault, N. Diebe, et al. "Arsenic hazard in shallow Cambodian groundwaters." Mineralogical Magazine 69, no. 5 (2005): 807–23. http://dx.doi.org/10.1180/0026461056950290.

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AbstractOur recent discovery of hazardous concentrations of arsenic in shallow sedimentary aquifers in Cambodia raises the spectre of future deleterious health impacts on a population that, particularly in non-urban areas, extensively use untreated groundwater as a source of drinking water and, in some instances, as irrigation water. We present here small-scale hazard maps for arsenic in shallow Cambodian groundwaters based on >1000 groundwater samples analysed in the Manchester Analytical Geochemistry Unit and elsewhere. Key indicators for hazardous concentrations of arsenic in Cambodian g

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Wei, De Jian, and Xin Gui Zhang. "Analysis for the Uncertainty and Changeability of Groundwater Causticity." Applied Mechanics and Materials 130-134 (October 2011): 3788–90. http://dx.doi.org/10.4028/www.scientific.net/amm.130-134.3788.

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During wet season and dry season, the groundwater quality analysis results of one engineering site in Nanning indicated that the causticity of groundwater mainly included acid causticity (pH value), calcareous causticity (corrosive CO2) and leaching causticity (HCO3-). Though the twice analysis results of water causticity are both moderately corrosion, the types of decomposed corrosion are different. It indicated the uncertainty and changeability of decomposed corrosion. In actual projects, some special ingredients in groundwater, the site natural environment and hydrologic geologic conditions

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LEE, J. Y. "Environmental issues of groundwater in Korea: implications for sustainable use." Environmental Conservation 38, no. 1 (2011): 64–74. http://dx.doi.org/10.1017/s0376892911000087.

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SUMMARYGroundwater has been extensively exploited worldwide but is now confronted by a variety of problems, including groundwater depletion and contamination, that threaten its sustainable use as a clean water source. Groundwater is one of the major sources of water for domestic, agricultural and industrial uses, and provides 13% of the total annual water supply in Korea. Annual groundwater use has continuously increased from 2.57 billion m3 in 1994 to 3.72 billion m3 in 2007, of which 48.1% was consumed for domestic purposes. However, due to imprudent groundwater development and inappropriate

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Jantzen, Carol M., and Cory L. Trivelpiece. "Uranium Dissolution and Geochemical Modeling in Anoxic and Oxic Solutions." MRS Advances 2, no. 13 (2017): 705–10. http://dx.doi.org/10.1557/adv.2017.58.

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ABSTRACTHigh Level Waste (HLW) glasses are to be stored in deep geologic repositories around the world. Some potential repository geologies have oxidizing groundwaters while some have reducing or anoxic groundwaters. The differences in the oxidizing potential of the groundwater, expressed as groundwater Eh, which has a profound impact on the release of multivalent species such as iron and uranium from the glass. Static leach testing of monolithic glass samples (ASTM C1220) doped with uranium were performed at 90°C in an Ar glovebox under anoxic and oxic conditions. Tests were performed in both

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Beden, Neslihan, Nazire Göksu Soydan-Oksal, Sema Arıman, and Hayatullah Ahmadzai. "Delineation of a Groundwater Potential Zone Map for the Kızılırmak Delta by Using Remote-Sensing-Based Geospatial and Analytical Hierarchy Processes." Sustainability 15, no. 14 (2023): 10964. http://dx.doi.org/10.3390/su151410964.

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Locating prospective groundwater recharge zones is essential for managing and planning groundwater resources. Therefore, spatial modeling of groundwater distribution is a significant undertaking that would aid groundwater’s subsequent conservation and management. The current study employs geographic information systems (GIS) and analytical hierarchy process (AHP) based on multi-criteria analysis to identify groundwater potential zones (GPZ). The AHP technique was utilized to analyze and generate the geo-environmental factor parameters, which included drainage density, lineament density, precip

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Hernández-Antonio, A., J. Mahlknecht, C. Tamez-Meléndez, et al. "Groundwater flow processes and mixing in active volcanic systems: the case of Guadalajara (Mexico)." Hydrology and Earth System Sciences 19, no. 9 (2015): 3937–50. http://dx.doi.org/10.5194/hess-19-3937-2015.

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Abstract. Groundwater chemistry and isotopic data from 40 production wells in the Atemajac and Toluquilla valleys, located in and around the Guadalajara metropolitan area, were determined to develop a conceptual model of groundwater flow processes and mixing. Stable water isotopes (δ2H, δ18O) were used to trace hydrological processes and tritium (3H) to evaluate the relative contribution of modern water in samples. Multivariate analysis including cluster analysis and principal component analysis were used to elucidate distribution patterns of constituents and factors controlling groundwater ch

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Van, Tuc Dang, Quang Khai Ha, and Phu Le Vo. "Groundwater resources in Bac Lieu province, Mekong Delta: current groundwater extraction and related issues." IOP Conference Series: Earth and Environmental Science 1170, no. 1 (2023): 012027. http://dx.doi.org/10.1088/1755-1315/1170/1/012027.

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Abstract Groundwater in coastal cities is facing with various challenges such as contamination, salinization and land subsidence due to poor management and climate change. This research is aimed to summary groundwater issues such as groundwater quality, salinization and land subsidence in Bac Lieu City, a coastal city of Mekong Delta. A datasets of wells survey, wells logs and groundwater sampling were utilized for the study. The results show that saline groundwaters (TDS> 1.5 g/L) cover 99 and 54% area of shallow aquifers including Holocene, Upper Pleistocene and 48, 93, and 82% area of ve

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Puspita, T. R., and D. A. Kuncoro. "Groundwater Facies in the South Parts of Tegal-Brebes Groundwater Basin." IOP Conference Series: Earth and Environmental Science 1233, no. 1 (2023): 012010. http://dx.doi.org/10.1088/1755-1315/1233/1/012010.

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Abstract The southern part of the Tegal Brebes Groundwater Basin has various rock units originating from the volcanic activity of the Slamet Volcano. The groundwater interacts with these rocks and influences the hydrogeochemical process that may alter its chemical components. The objective of this research is to assess the relationship between groundwater chemistry facies and the rock aquifer. The finding of this research will help us better understand how hydrogeochemical processes work, perform thorough research, and determine the water quality. The groundwater characteristics are determined

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Parasha, V. K., and Sunil Kumar Sharma. "Suitability of Groundwater Quality for Irrigational use between Silkanth and Kundgaon, North of River Narmada in the Upper Alluvial Plains of Narmada Valley, District Sehore and Dewas, M.P., India." Oriental Journal of Physical Sciences 2, no. 2 (2017): 121–28. http://dx.doi.org/10.13005/ojps02.02.12.

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Groundwater is one of the earth’s most widely distributed resources and is consistently catering to the requirement of the agricultural irrigation. In the present study, an attempt has been made to understand the hydrochemistry and its agricultural water quality of groundwater between Silkhanth and Kundgaon, North of river Narmada, Madhya Pradesh. During the course of water quality studies of the area, 17 groundwater samples were collected and chemically analysed. Results obtained from water chemistry were used in the determination of different irrigational specifications to appraise the agric

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Wu, Ruohan, Laura A. Richards, Ajmal Roshan, and David A. Polya. "Artificial Intelligence Modelling to Support the Groundwater Chemistry-Dependent Selection of Groundwater Arsenic Remediation Approaches in Bangladesh." Water 15, no. 20 (2023): 3539. http://dx.doi.org/10.3390/w15203539.

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Groundwater arsenic (As) still poses a massive public health threat, especially in South Asia, including Bangladesh. The arsenic removal efficiency of various technologies may be strongly dependent on groundwater composition. Previously, others have reported that the molar ratio [Fe]−1.8[P][As], in particular, can usefully predict the potential efficiency of groundwater As removal by widespread sorption/co-precipitation-based remediation systems. Here, we innovatively extended the application of artificial intelligence (AI) machine learning models to predict the geospatial distribution of [Fe]

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Hartmann, Andreas, Scott Jasechko, Tom Gleeson, et al. "Risk of groundwater contamination widely underestimated because of fast flow into aquifers." Proceedings of the National Academy of Sciences 118, no. 20 (2021): e2024492118. http://dx.doi.org/10.1073/pnas.2024492118.

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Groundwater pollution threatens human and ecosystem health in many regions around the globe. Fast flow to the groundwater through focused recharge is known to transmit short-lived pollutants into carbonate aquifers, endangering the quality of groundwaters where one quarter of the world’s population lives. However, the large-scale impact of such focused recharge on groundwater quality remains poorly understood. Here, we apply a continental-scale model to quantify the risk of groundwater contamination by degradable pollutants through focused recharge in the carbonate rock regions of Europe, Nort

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Ács, Tamás, and Zoltán Simonffy. "A new deterministic method for groundwater mapping using a digital elevation model." Water Supply 13, no. 4 (2013): 1146–53. http://dx.doi.org/10.2166/ws.2013.106.

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Accurate knowledge of groundwater levels and flow conditions in the vicinity of groundwater-dependent terrestrial ecosystems (GWDTE-s) is required for identifying groundwater dependency and comparing the present situation with the optimal one, as part of the status assessment of groundwaters according to the EU Water Framework Directive. Geostatistical methods (like kriging or cokriging) may result in an unrealistic groundwater level map if only a few measured data are available. In this paper a new, grid-based, deterministic method (GSGW-model) is introduced. The aim of the model is to calcul

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Živančev, Nevena, Srđan Kovačević, Marija Perović, Aleksandar Čalenić, and Milan Dimkić. "Influence of oxic and anoxic groundwater conditions on occurrence of selected agrochemicals." Water Supply 20, no. 2 (2019): 487–98. http://dx.doi.org/10.2166/ws.2019.178.

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Abstract The occurrence and mitigation of selected pesticides and nitrates in surface and groundwater samples from two alluvions in the Republic of Serbia are investigated in this study. The influence of aquifer conditions on the degradation processes of pesticides and nitrates is considered as a potential removal mechanism of compound residues in alluvial groundwater. Nitrate concentration was analyzed in 144 groundwater samples in the Kovin-Dubovac drainage system and 63 samples at the Ključ groundwater source. The occurrence of 15 pesticides was monitored in groundwater in a total of 34 sam

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Orou, Rodrigue Kotchi, Gbombélé Soro, Drissa Tanina Soro, Abou Traoré, Rosine Marie N’guessan Fossou, and Nagnin Soro. "Aptitudes À L’agriculture Des Eaux Souterraines Du Departement d’Agboville (Sud-Est De La Côte d’Ivoire)." European Scientific Journal, ESJ 12, no. 21 (2016): 81. http://dx.doi.org/10.19044/esj.2016.v12n21p81.

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In the department of Agboville, farmers are interested in the using of groundwater to improve the performance of their crops. But they didn’t know the effects of this water on the crops without. The main objective of this study is to determine the quality of groundwater to prevent the risk of soil alkalinization and salinization in the department of Agboville. Hydrochemical analysis of 28 wells used for irrigation of crops was carried out. The dry residue (RS), the osmotic pressure (π), Sodium Absorption Ratio (SAR), the percentage of sodium exchange (ESP), salinity potential (SP), and the coe

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Sun, Xiaowen. "Interactions Between Groundwater Use and Climate Change." Theoretical and Natural Science 94, no. 1 (2025): 55–62. https://doi.org/10.54254/2753-8818/2025.21675.

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Groundwater is a crucial resource for irrigation and domestic use, particularly in China and the United States. Nevertheless, climate change and excessive extraction threaten its sustainability. Over-exploitation not only accelerates climate change but also heightens groundwaters vulnerability to its effects. Declining water tables and disrupted aquifer recharge reduce long-term availability, while groundwater pumping releases dissolved carbon and nitrogen compounds, contributing to greenhouse gas emissions. Deeper extraction demands greater energy input, primarily from fossil fuels, further e

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Hernández-Antonio, A., J. Mahlknecht, C. Tamez-Meléndez, et al. "Groundwater flow processes and mixing in active volcanic systems: the case of Guadalajara (Mexico)." Hydrology and Earth System Sciences Discussions 12, no. 2 (2015): 1599–631. http://dx.doi.org/10.5194/hessd-12-1599-2015.

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Abstract. Groundwater chemistry and isotopic data from 40 production wells in the Atemajac and Toluquilla Valleys, located in and around the Guadalajara metropolitan area, were determined to develop a conceptual model of groundwater flow processes and mixing. Multivariate analysis including cluster analysis and principal component analysis were used to elucidate distribution patterns of constituents and factors controlling groundwater chemistry. Based on this analysis, groundwater was classified into four groups: cold groundwater, hydrothermal water, polluted groundwater and mixed groundwater.

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